401-943-1164 / US & Canada Toll Free: 877-943-1164

Catalog # 309171 - Model 9171 RJ21/50-Pin A/B Manual Switch

    RJ21/50-Pin A/B Manual Switch
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Base Price:
$295.00
Catalog No: 309171
Model No: 9171
Switch Type (Fiber, Ethernet, etc.):Other
Switch Application/Uses:Telco Applications
Positions:2 (e.g. A/B and Common)
Channels per Switch/Chassis:1
Chassis/Rack Configuration:Desktop
Connector/Port:50-Pin, RJ21
Pins Switched:50
Local/Manual Control:Rotary Switch

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Shipments are made via UPS Ground, unless otherwise specified. Freight charges are prepaid and added to your invoice. We can estimate the freight costs for you.

We can ship freight collect on your account, just provide your UPS Account Number.

We can also ship via the carrier of your choice. Provide the details and your account number.

Products shall be shipped F.O.B. Electro Standards' facility. Title to and risk of loss or damage to the products shall pass to you upon Electro Standards delivery of the products to a carrier for shipment. Title to software will remain with the applicable licensor. Electro Standards' prices do not include shipping and handling charges. Electro Standards reserves the right to use its own discretion in the manner and routing of shipments. Electro Standards shall be permitted to deliver products in separate lots.

Shipping Return Policy

  • To return an item, contact Electro Standards at 401-943-1164 to obtain a Return Material Authorization (RMA) number. RMA numbers are valid for 30 days after the date of the shipment and cannot be extended or re-issued. We are unable to accept returns without an RMA number.
  • All returns except those of defective product are subject to a 15% restocking fee, and additional charges for handling or freight are refunded only in cases of defective products.
  • Return freight must be shipped prepaid. We recommend that you insure the package as you are responsible for risk of loss on all returned packages. We recommend that all cartons are properly packed as Electro Standards is not responsible for product damaged en route. We do not issue call tags for product returns.
  • Returned product must be clean, undamaged, and complete with all manuals, accessories, documents and packaging. The items must be in a resalable condition.
  • The product must have with it a copy of the original invoice or packing slip and the appropriate RMA paperwork.
  • If your item is not working properly, please contact Electro Standards at 401-943-1164 for help in trouble-shooting your application.
  • If the product is defective, Electro Standards will repair or replace that item (at our discretion) upon receipt and evaluation of the original product.
  • Electro Standards reserves the right to authorize product returns after 30 days from the invoice date in some cases. If the product is accepted after 30 days, credit will be issued toward future pruchases only and some additional restocking charges may be applied.
  • All credits from RMAs must be used within one calendar year of issue.

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Overview

RJ21/50-Pin Manual Network Switch 
Model 9171 RJ21/50-Pin A/B Switch, Desktop, Manual Operation

  • Ideal for fast swapping 25-Pair (RJ21) station cable connections.

 Model 9171 RJ21/50-Pin A/B Switch, Desktop, Manual Operation

SPECIFICATIONS:
  • PORT CONNECTORS: (3) RJ21/50-Pin female connectors labeled A, B, and COMMON.
  • FRONT PANEL CONTROLS: (1) Rotary Switch on front panel selects A or B.   
  • POWER: Manually operated.  No power required.
  • DIMENSIONS: Desktop 8.12"W x 3.46"H x 7.96"D (20.7 x 8.8 x 20.3 cm) 
  • WEIGHT: Approximately 1.8 lbs. (0.9 kg)
RJ21/50-PIN A/B  SWITCH APPLICATION: The drawing illustrates a COMMON device connected to the RJ21/50-Pin COMMON port with access to two other devices connected to the RJ21/50-Pin A (Primary Line A) and B (Backup Line B) ports.

Network Application Diagram shows Model 9171 RJ21/50-Pin A/B Switch, Desktop, Manual Operation ideal for swapping 25-pair RJ21 station cable connections

 FEATURES:

  • Allows quick connection to any one of two RJ21/50-Pin interface devices from one COMMON port.
  • High quality sealed switch with self wiping precious metal contacts.
  • The ports are transparent to all data.
  • All (50) pins of the RJ21 interface are switched via break-before-make rotary switch. 
  • Eliminates the need to plug and unplug cables.
  • No external power required.
  • Manual operation via front-panel rotary switch.
  • Attractive anodized black box packaging provides EMI/RFI shielding.
  • Custom length, RJ21 cables available for your switch installation.
  • Lifetime warranty against manufacturing defects.

The Model 9171 RJ21/50-Pin interface A/B Switch allows the user to access two devices connected to A and B ports from on COMMON port.  Switching between device A and B is quick and easy via the front panel rotary selector.  No need to plug and unplug interconnection cables thereby eliminating connector wear and/or errors when reconfiguring system connections.  The Model 9171 is packaged in a compact desktop style enclosure.

 Custom Network Switches are available. Contact us by phone, email, or complete the Online Custom Products Form. /Products-Custom/Copper-Switch/

Electro Standards can supply all of your Network Cable requirements. Click here to reach our CABLES, COPPER NETWORK Webpage. 

All data switches, data communication products, and data acquisition products are subject to a one year warranty against manufacturing defects.  The limit of ESL liability is limited to the cost of the ESL product provided.

All ESL products are available for export.
 
 *Prices online are subject to change and verification. 

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Developer Tools

Database Activity Shipping Rates Performance Tracking Cache Storage Session Storage
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# Seconds Since First Hit Trace Command Type Command Text Parameters Execution Time
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2. 0.0156173 DBInterface.GetDataT show StoredProcedure [dbo].[DefaultSearchAttributeGetByUserID] @g_UserID =61a23959-b8c7-4cab-b3a0-ae961f631dd0
 0.0156173
3. 0.0312451 DBInterface.get_oSQL show StoredProcedure [dbo].[RecentlyViewedListLoadByEntityType] @UserID=61a23959-b8c7-4cab-b3a0-ae961f631dd0
@EntityType=product
@RowCount=5
@SiteID=1
 0
4. 0.0312451 DBInterface.GetDataT show StoredProcedure [dbo].[PageUrlLoadByPrimaryKey] @PageUrl=/309171-9171-rj21-50-pin-a-b-manual-switch-618.html
@Type=PRODUCT
 0
5. 0.0468695 DBInterface.get_oSQL show StoredProcedure [dbo].[ProductLoadByPrimaryKey] @ProductID=618
@SiteID=1
@UserID=61a23959-b8c7-4cab-b3a0-ae961f631dd0
 0.0156244
6. 0.0468695 DBInterface.GetDataT show StoredProcedure [dbo].[CategoryListByProductId] @ProductId=618
@SiteID=1
@ShowHidden=False
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7. 0.0468695 DBInterface.GetDataT show StoredProcedure [dbo].[PageUrlLoadByPrimaryKey] @Type=CATEGORY
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8. 0.0468695 DBInterface.GetDataT show StoredProcedure [dbo].[DocumentLoadByProductKey] @ProductID=618
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9. 0.0468695 DBInterface.get_oSQL show StoredProcedure [dbo].[ImageLoadByProductKey] @ProductID=618
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10. 0.0468695 DBInterface.get_oSQL show StoredProcedure [dbo].[ProductRelationshipListByProductID] @ProductID=618
@SiteID=1
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11. 0.0468695 DBInterface.get_oSQL show StoredProcedure [dbo].[CL_procGetOtherProductsBought] @ProductID=618
@SiteID=1
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12. 0.0468695 DBInterface.get_oSQL show StoredProcedure [dbo].[AccessoryListLoadByProductKey] @ProductID=618
@ShowHidden=0
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13. 0.0624988 DBInterface.get_oSQL show StoredProcedure [dbo].[SKUListLoadByProductKey] @ProductID=618
@SiteID=1
@UserID=61a23959-b8c7-4cab-b3a0-ae961f631dd0
@ShowHidden=0
 0.0156293
14. 0.0624988 DBInterface.get_oSQL show StoredProcedure [dbo].[PriceListBySkuId] @SkuList=618
@UserID=61a23959-b8c7-4cab-b3a0-ae961f631dd0
@SiteID=1
 0
15. 0.0624988 DBInterface.GetDataT show StoredProcedure [dbo].[DefaultSearchAttributeGetByUserID] @g_UserID =61a23959-b8c7-4cab-b3a0-ae961f631dd0
 0
16. 0.0624988 DBInterface.GetDataT show StoredProcedure [dbo].[getProductAttributesBySkuId] @SkuId=618
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17. 0.0624988 DBInterface.get_oSQL show StoredProcedure [dbo].[SKUListLoadByProductKey] @ProductID=125
@SiteID=0
@ShowHidden=0
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18. 0.0624988 DBInterface.get_oSQL show StoredProcedure [dbo].[PriceListBySkuId] @SkuList=125
@UserID=
@SiteID=1
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19. 0.0781224 DBInterface.get_oSQL show StoredProcedure [dbo].[SKUListLoadByProductKey] @ProductID=249
@SiteID=0
@ShowHidden=0
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20. 0.0781224 DBInterface.get_oSQL show StoredProcedure [dbo].[PriceListBySkuId] @SkuList=249
@UserID=
@SiteID=1
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21. 0.0846344 DBInterface.GetDataT show StoredProcedure [dbo].[getProductAttributesByProductId] @ProductId=618
 0.006512
22. 0.0846344 DBInterface.GetDataT show StoredProcedure [dbo].[AttributesDistinctByProductID] @ProductId=618
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23. 0.0846344 DBInterface.GetDataT show StoredProcedure [dbo].[procGetAllCountryList] - 0
24. 0.0846344 DBInterface.GetDataT show StoredProcedure [dbo].[procGetCountryStatesList] @CountryCode=USA
 0
25. 0.0846344 DBInterface.GetDataT show StoredProcedure [dbo].[PageUrlLoadByPrimaryKey] @PageUrl=/309171-9171-rj21-50-pin-a-b-manual-switch-618.html
@Type=PRODUCT
 0
26. 0.0846344 DBInterface.get_oSQL show StoredProcedure [dbo].[ProductLoadByPrimaryKey] @ProductID=618
@SiteID=1
@UserID=61a23959-b8c7-4cab-b3a0-ae961f631dd0
 0
27. 0.1002761 DBInterface.GetDataT show StoredProcedure [dbo].[CategoryListByProductId] @ProductId=618
@SiteID=1
@ShowHidden=False
 0.0156417
28. 0.1002761 DBInterface.GetDataT show StoredProcedure [dbo].[PageUrlLoadByPrimaryKey] @Type=CATEGORY
 0
29. 0.1002761 DBInterface.get_oSQL show StoredProcedure [dbo].[SKUListLoadByProductKey] @ProductID=618
@SiteID=1
@UserID=61a23959-b8c7-4cab-b3a0-ae961f631dd0
@ShowHidden=0
 0
30. 0.1002761 DBInterface.GetDataT show StoredProcedure [dbo].[getProductAttributesBySkuId] @SkuId=618
 0
31. 0.1002761 DBInterface.GetDataT show StoredProcedure [dbo].[DocumentLoadByProductKey] @ProductID=618
 0
32. 0.1002761 DBInterface.get_oSQL show StoredProcedure [dbo].[ImageLoadByProductKey] @ProductID=618
 0
33. 0.1002761 DBInterface.get_oSQL show StoredProcedure [dbo].[ProductRelationshipListByProductID] @ProductID=618
@SiteID=1
 0
34. 0.1002761 DBInterface.get_oSQL show StoredProcedure [dbo].[SKUListLoadByProductKey] @ProductID=618
@SiteID=1
@UserID=61a23959-b8c7-4cab-b3a0-ae961f631dd0
@ShowHidden=0
 0
35. 0.1002761 DBInterface.get_oSQL show StoredProcedure [dbo].[PriceListBySkuId] @SkuList=618
@UserID=61a23959-b8c7-4cab-b3a0-ae961f631dd0
@SiteID=1
 0
36. 0.1002761 DBInterface.GetDataT show StoredProcedure [dbo].[DefaultSearchAttributeGetByUserID] @g_UserID =61a23959-b8c7-4cab-b3a0-ae961f631dd0
 0
37. 0.1002761 DBInterface.GetDataT show StoredProcedure [dbo].[getProductAttributesBySkuId] @SkuId=618
 0
38. 0.1002761 DBInterface.GetDataT show StoredProcedure [dbo].[getProductAttributesByProductId] @ProductId=618
 0
39. 0.1158992 DBInterface.GetDataT show StoredProcedure [dbo].[AttributesDistinctByProductID] @ProductId=618
 0.0156231
40. 0.1158992 DBInterface.GetDataT show StoredProcedure [dbo].[Cart_LoadByUserID] @UserID=61a23959-b8c7-4cab-b3a0-ae961f631dd0
@SiteID=1
 0
Total DB Execution Time 0.1240229
Session Key Session Value
UserId 61a23959-b8c7-4cab-b3a0-ae961f631dd0
IsDynamicallyGeneratedUserId True
AdminLastSitePage /309171-9171-rj21-50-pin-a-b-manual-switch-618.html
AdminLastPage /GetProduct.aspx?PageKey=%2f309171-9171-rj21-50-pin-a-b-manual-switch-618.html&unq=9/21/2026 7:50:50 PM
OrderNumber
Section Execution Time
DBInterface.vb 0.6563424
MasterPage.master 0.1552743
DeveloperTools.ascx 0
Load Time:0.1709015s  |  Database Hits: 40